/**
 * Copyright 2006 gworks.com.au
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License. (http://www.apache.org/licenses/LICENSE-2.0)
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed 
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for 
 * the specific language governing permissions and limitations under the License.
 *
 * <dhamma-message src="Atisha (11th century Tibetan Buddhist master)">
 *  The greatest achievement is selflessness. The greatest worth is self-mastery.
 *  The greatest quality is seeking to serve others. The greatest precept is continual awareness.
 *  The greatest medicine is the emptiness of everything. The greatest action is not conforming with the worlds ways.
 *  The greatest magic is transmuting the passions. The greatest generosity is non-attachment.
 *  The greatest goodness is a peaceful mind. The greatest patience is humility.
 *  The greatest effort is not concerned with results. The greatest meditation is a mind that lets go.
 *  The greatest wisdom is seeing through appearances. 
 * </dhamma-message>
 * 
 * @author Ashin Wimalajeewa (ash)
 */
package org.javaongems.rzk.client.zul;

import com.google.gwt.user.client.Element;

public class ZkUtils {
	static public void out(String out) {
		System.out.println(out);
	}
	
	native static public String tagName(Element el) /*-{
		return el && el.tagName ? el.tagName.toUpperCase(): "";
	}-*/;
	
    native static public Element previousSibling(Element el, String tagName) /*-{
		while (el && (el = el.previousSibling) != null) {
		  var tn = @org.javaongems.rzk.client.zul.ZkUtils::tagName(Lcom/google/gwt/user/client/Element;)(el);
		  if (tn == tagName)
		    return el;
		}
		return null;
	 }-*/; 

	native static public Element nextSibling(Element el, String tagName) /*-{
		  // @org.javaongems.rzk.client.zul.ZkUtils::out(Ljava/lang/String;)("0");
		while (el && (el = el.nextSibling) != null) {
		  var tn = @org.javaongems.rzk.client.zul.ZkUtils::tagName(Lcom/google/gwt/user/client/Element;)(el);
		  if (tn == tagName)
		    return el;
		}
		return null;
	}-*/;

    native static public Element parentNode(Element el, String tagName) /*-{
		while (el && (el = el.parentNode) != null) {
		  var tn = @org.javaongems.rzk.client.zul.ZkUtils::tagName(Lcom/google/gwt/user/client/Element;)(el);
		  if (tn == tagName)
		    return el;
		}
		return null;
 	}-*/;
}
